80 SUPPLEMENTARY REQUIREMENTS
Maximum floor area per building, in square feet (Maximum combined floor area for all buildings, in square feet) | |||||
|---|---|---|---|---|---|
Retail/Office/Restaurant/Lodging | Storage/Warehouse | Auto/Equipment Repair | Public/Community | Manufacturing/Fabrication | |
Acme | 2,734 (2,734) | 2,070 (2,070) | 17,784 (21,896) | ||
Axton & Guide Meridian | 4,800 (4,800) | 2,160 (2,160) | |||
Birch Bay-Lynden & V.V. | 2,784 (3,684) | ||||
Cain Lake | 2,060 (2,060) | 2,473 (4,825) | |||
Custer | 3,968 (3,968) | 3,300 (3,300) | 46,451 (46,451) | ||
Deming | 11,790 (18,757) | 2,400 (2,400) | 1,392 (1,392) | 30,099 (79,512) | |
Diablo | 513 (513) | 10,872 (10,872) | |||
Glacier | 3,500 (7,888) | 3,584 (3,584) | 3,150 (3,150) | ||
Hinotes Corner | 6,636 (9,036) | 1,500 (1,500) | 19,856 (19,856) | ||
Kendall | 7,000 (7,000) | 3,340 (3,340) | |||
Laurel | 10,700 (11,000) | 10,260 (10,260) | 21,950 (63,360) | 17,670 (23,590) | |
Lummi Peninsula | 7,800 (18,540) | 7,280 (7,280) | |||
Maple Falls | 8,020 (8,020) | 4,620 (4,620) | 8,822 (10,082) | ||
Newhalem | 3,218 (3,218) | 4,810 (12,981) | 16,284 (28,924) | ||
Nugents Corner | 18,221 (19,499) | 3,240 (3,240) | |||
Point Roberts | 34,704 (34,704) | 3,286 (3,286) | 6,732 (6,732) | 11,246 (11,246) | |
Pole & Guide Meridian | 6,400 (6,400) | 4,548 (5,556) | 4,000 (4,000) | ||
Sandy Point | 1,428 (1,428) | ||||
Smith & Guide Meridian | 5,866 (7,068) | 5,900 (5,900) | 9,600 (17,100) | 22,042 (22,042) | |
Sudden Valley | 6,348 (10,320) | 30,140 (44,945) | |||
Van Wyck | 3,480 (3,480) | 1,904 (1,904) | |||
Wiser Lake | 24,690 (24,690) | 11,222 (12,374) | 2,130 (2,130) | 6,368 (6,368) | |
Zoning District | Setback (in feet) from: | ||||||
|---|---|---|---|---|---|---|---|
Right-of-Way Classification | Other | ||||||
I-5, State Highways, Urban Principal, and Urban Minor Arterials | Urban Collector Arterials and Rural Major Collectors | Minor Collectors | Local Access Streets | Minor Access Streets | Side Yard | Rear Yard | |
Residential Setbacks | |||||||
Rural Residential (RR) | 45 | 35 | 25 | 25 | 20 | 5 | 5 |
– If in a WRPO1 or LWWO2 | 30 | 30 | 20 | 20 | 20 | 5 | 5 |
Note: Depending on circumstances, some RR setbacks may differ pursuant to WCC § 20.80.210(5)(a)(iv) and § 20.80.251(2). | |||||||
Rural Residential-Island (RR-I) | – | – | 25 | 25 | 20 | 5 | 5 |
Note: Depending on circumstances, some RR-I setbacks may differ pursuant to WCC § 20.80.251(4). | |||||||
Point Roberts Transitional Zone (TZ) | 45 | 35 | 25 | 25 | 20 | 5 | 5 |
Urban Residential Mixed Use (UR-MX) | 45 | 35 | 25 | 10 | 10 | 5 | 5 |
– If in a WRPO1 or LWWO2 | 30 | 30 | 20 | 20 | 20 | 5 | 5 |
Urban Residential Medium (URM) | 45 | 35 | 25 | 25 | 20 | 5 | 5 |
– If in a WRPO1 or LWWO2 | 30 | 30 | 20 | 20 | 20 | 5 | 5 |
Note: Depending on circumstances, some URM setbacks may differ pursuant to WCC § 20.80.251(3). Note: Single-family attached in UR, URM, and UR-MX may have a zero-foot interior side yard setback. | |||||||
Urban Residential (UR) | 45 | 35 | 25 | 25 | 20 | 51 | 5 |
– If in a WRPO1 or LWWO2 | 30 | 30 | 20 | 20 | 20 | 5 | 5 |
Note: Depending on circumstances, some UR setbacks may differ pursuant to WCC § 20.80.251(1). | |||||||
Rural Setbacks | |||||||
Rural (R) | 45 | 45 | 35 | 25 | 20 | 5 | 5 |
– If in a WRPO1 or LWWO2 | 30 | 30 | 20 | 20 | 20 | 5 | 5 |
Note: Depending on circumstances, some R setbacks may differ pursuant to WCC § 20.38.060(7), § 20.80.210(5)(a)(iv), and § 20.80.252. | |||||||
Commercial Setbacks | |||||||
General Commercial (GC) | 30 | 30 | 25 | 25 | 20 | 0 | 10 |
Note: Depending on circumstances, some GC setbacks may differ pursuant to WCC § 20.62.550. | |||||||
Rural General Commercial (RGC) | 30 | 30 | 25 | 25 | 20 | 0 | 10 |
Note: Depending on circumstances, some RGC setbacks may differ pursuant to WCC § 20.59.600. | |||||||
Tourist Commercial (TC) | 30 | 30 | 25 | 25 | 20 | 0 | 10 |
Note: Depending on circumstances, some TC setbacks may differ pursuant to WCC § 20.63.550 and § 20.80.253(3). | |||||||
Small Town Commercial (STC) | 30 | 30 | 25 | 25 | 20 | 0 | 10 |
Note: Depending on circumstances, some STC setbacks may differ pursuant to WCC § 20.59.600, § 20.61.400(1), and § 20.61.600. | |||||||
Resort Commercial (RC) | 30 | 30 | 25 | 25 | 20 | 5 | 5 |
Note: Depending on circumstances, some RC setbacks may differ pursuant to WCC § 20.64.550 and § 20.80.253(4). | |||||||
Neighborhood Commercial (NC) | 25 | 25 | 25 | 25 | 20 | 0 | 10 |
– If in a WRPO1 or LWWO2 | 30 | 30 | 20 | 20 | 20 | 0 | 10 |
Note: Depending on circumstances, some NC setbacks may differ pursuant to WCC § 20.80.253 and § 20.60.550. | |||||||
Industrial Setbacks | |||||||
Heavy Impact Industrial (HII) | 100 | 100 | 100 | 100 | 30 | 30 | 30 |
Note: Depending on circumstances, some HII setbacks may differ pursuant to WCC § 20.68.552 and § 20.80.254(3). | |||||||
Light Impact Industrial (LII) | 30 | 30 | 30 | 30 | 20 | 10 | 10 |
Note: Depending on circumstances, some LII setbacks may differ pursuant to WCC § 20.80.254(1). | |||||||
General Manufactur-ing (GM) | 30 | 30 | 30 | 30 | 20 | 10 | 10 |
Note: Depending on circumstances, some GM setbacks may differ pursuant to WCC § 20.80.254(2). | |||||||
Airport Operations (AO) | 30 | 30 | 30 | 30 | 20 | 10 | 10 |
Note: Depending on circumstances, some AO setbacks may differ pursuant to WCC § 20.70.550 and § 20.80.254(4). | |||||||
Rural Industrial – Manufacturing (RIM) | 30 | 30 | 30 | 30 | 20 | 10 | 10 |
Note: Depending on circumstances, some RIM setbacks may differ pursuant to WCC § 20.69.350 and § 20.69.550. | |||||||
Resource Lands Setbacks | |||||||
Agricultural (AG) | |||||||
– parcels ≥ 5 acres | 50 | 50 | 50 | 50 | 50 | 20 | 20 |
– parcels < 5 acres | |||||||
– Habitable structures | 45 | 35 | 25 | 25 | 20 | 30 | 30 |
– Nonhabitable, accessory structures | 45 | 35 | 25 | 25 | 20 | 5 | 5 |
Note: Depending on circumstances, some AG setbacks may differ pursuant to WCC § 20.38.060(7) and § 20.80.255. | |||||||
Rural Forestry (RF) | 45 | 35 | 25 | 25 | 20 | 20 | 20 |
– If in a WRPO1 or LWWO2 | 30 | 30 | 20 | 20 | 20 | 20 | 20 |
Note: Depending on circumstances, some RF setbacks may differ pursuant to WCC § 20.80.210(5)(a)(iv) and § 20.80.256. | |||||||
Commercial Forestry (CF) | 45 | 35 | 25 | 25 | 20 | 100 | 100 |
– If in a WRPO1 or LWWO2 | 30 | 30 | 20 | 20 | 20 | 100 | 100 |
Note: Depending on circumstances, some CF setbacks may differ pursuant to WCC § 20.80.256(2). | |||||||
Other Setbacks | |||||||
Recreation Open Space (ROS) | 100 | 100 | 50 | 50 | 50 | 50 | 50 |
Note: Depending on circumstances, some ROS setbacks may differ pursuant to WCC § 20.80.257. | |||||||
Notes: |
|---|
1 Water Resources Protection Overlay District. |
2 Lake Whatcom Watershed Overlay District. |
Off-Street Parking Diagram ![]() |
Dimension | Diagram Location | Parking Angle | |||
|---|---|---|---|---|---|
45° | 60° | 75° | 90° | ||
Stall width, parallel to aisle | A | 12.5 | 10.5 | 9.2 | 9.0 |
Stall length of line | B | 27.6 | 23.6 | 21.0 | 18.0 |
Stall depth to wall | C | 19.4 | 20.3 | 20.0 | 18.0 |
Aisle width between stall lines | D | 12.1 | 12.8 | 23.0 | 20.0 |
Stall depth, interior | E | 16.4 | 18.0 | 19.0 | 18.0 |
Module, wall to interior | F | 47.9 | 55.1 | 62.0 | 63.0 |
Module, interior | G | 44.9 | 53.1 | 61.0 | 63.0 |
Module, interior to curb face | H | 45.9 | 52.5 | 59.4 | 60.0 |
Module, interior to curb face | I | 2.0 | 2.3 | 2.5 | 2.5 |
Offset | J | 6.6 | 2.5 | 0.7 | 0 |
Setback | K | 13.1 | 9.2 | 4.9 | 0 |
Cross aisle, one-way | L | 14.1 | 14.1 | 14.1 | 14.1 |
Cross aisle, two-way | --- | 20.0 | 20.0 | 20.0 | 22.0 |
Within Special Stormwater Districts – Modified Thresholds for Stormwater Management Table | |
|---|---|
Minimum Requirement (MR)1 | When Required |
MR1 Stormwater Site Plan | > 500 sq. ft. of new impervious surface, or Renovation projects where the estimated cost exceeds 50% of the assessed value |
MR2 Construction SWPPP | Always required |
MR3 Source Control | Always required |
MR4 Preserve Natural Drainage | > 500 sq. ft. of new impervious surface, or Renovation projects where the estimated cost exceeds 50% of the assessed value |
MR5 On-Site Stormwater Management | • Property ≥ 2 acres meeting MR1, provide dispersion • Property < 2 acres meeting MR1 where soils are suitable for infiltration, provide infiltration • Property < 2 acres meeting MR1 where soils are not suitable for infiltration and project does not increase the 24-hour, 100-year peak flow rate by ≥ 0.1cfs; provide dispersion |
MR6 Treatment | Always required |
MR7 Flow Control | Property < 2 acres meeting MR1 where project increases the 24-hour, 100-year peak flow rate by ≥ 0.1cfs; provide detention |
MR8 Wetlands Protection | > 500 sq. ft. of new impervious surface, or Renovation projects where the estimated cost exceeds 50% of the assessed value |
MR9 O&M | Required only if stormwater facility installed |
Notes: |
|---|
1 Minimum requirements MR5 – MR9 likely require preparation by a professional engineer. |
Outside the NPDES Phase II Permit Area, the Lake Whatcom Watershed Overlay District, and the Stormwater Special Districts – Modified Thresholds for Stormwater Management Table | |||
|---|---|---|---|
Minimum Requirement (MR)1 | Land Use Intensity2 | ||
Low | Medium | High | |
MR1 Stormwater Site Plan | ≥ 7,000 sq. ft. of new plus replaced hard surface, or ≥ 14,000 sq. ft. land disturbing activity | ≥ 4,000 sq. ft. of new plus replaced hard surface, or ≥ 14,000 sq. ft. land disturbing activity | Per manual3 |
MR2 Construction SWPPP | Always required | ||
MR3 Source Control | Not required | ≥ 4,000 sq. ft. of new plus replaced hard surface, or ≥ 14,000 sq. ft. land disturbing activity | Per manual3 |
MR4 Preserve Natural Drainage | ≥ 7,000 sq. ft. of new plus replaced hard surface, or ≥ 14,000 sq. ft. land disturbing activity | ||
MR5 On-Site Stormwater Management | Not required | ||
MR6 Treatment | Not required | ||
MR7 Flow Control | Not required | ||
MR8 Wetlands Protection | ≥ 7,000 sq. ft. of new plus replaced hard surface, or ≥ 14,000 sq. ft. land disturbing activity | ||
MR9 O&M | Required only if stormwater facility installed | ||
Notes: |
|---|
1 Minimum requirements MR5 – MR9 likely require preparation by a professional engineer. |
2 See subsection (1)(e) of this section to determine land use intensity. |
3 Application of the stormwater manual is not required where a county-, state-, or federal-approved farm plan, or equivalent document, demonstrates stormwater is being effectively managed to the standards equivalent to an NPDES Phase II permit. |
Land Use Intensity for Stormwater Management Table | |
|---|---|
Note: Any project that results in new plus replaced hard surface greater than or equal to 10 percent of the gross parcel size or 20,000 sq. ft., whichever is greater, converts 1.5 acres of vegetation to lawn or five acres of vegetation to pasture, or results in cumulative impervious surface exceeding the threshold set below, is subject to the thresholds for "high intensity" land uses. | |
Low | • Single-family residential and accessory uses on lots of record of 25,000 sq. ft. or larger; • Construction of agricultural buildings, including those used in the processing and wholesale of agricultural products, on agricultural land as defined by RCW 84.34.020(2); • Seasonal roadside stands; or • Roads (other than those exempt as pavement maintenance). |
Medium | • Single-family residential and accessory uses on lots of record smaller than 25,000 sq. ft.; • Short subdivisions of land into four or fewer lots; • Minor utility developments; or • Trails and trailheads. |
High | • All other uses, including all commercial, industrial, institutional, and urban or multifamily residential uses; • Subdivisions of land into more than four lots; • All uses on parcels bisected by the NPDES Phase II permit area boundary; • Any project that results in new plus replaced hard surface greater than or equal to 10 percent of the gross parcel size or 20,000 sq. ft., whichever is greater, or converts 1.5 acres of vegetation to lawn or five acres of vegetation to pasture; • In the Rural and Residential Rural Districts, any project on a parcel smaller than 2.95 acres that results in the parcel having a cumulative impervious surface exceeding 10,000 sq. ft. or 35 percent of gross parcel size, whichever is greater; or • In the Rural and Residential Rural Districts, any project on a parcel of 2.95 acres or larger that results in the parcel having a cumulative impervious surface exceeding 45,000 sq. ft. or 5 percent of gross parcel size, whichever is greater. Note: For purposes of determining high intensity land use, the calculation of cumulative impervious surface shall not include roadways or driveways in public rights-of-way or in easements that serve other parcels. |
• Urban Residential. |
• Commercial. |
• Rural Residential. |
• Rural within the NPDES Phase II area boundaries, as delineated at the time that the county determines that the development application is complete. |
• Industrial within the NPDES Phase II area boundaries, as delineated at the time that the county determines that the development application is complete. |
• Drayton Harbor watershed; |
• Lake Padden watershed; |
• Lake Samish watershed; and |
• Birch Bay watershed. |
Table 20.80.910(1) Minimum Lot Size Required for an ADU | ||
|---|---|---|
District | Attached ADUs | Detached ADUs |
UR | N/A | N/A |
URM | N/A | N/A |
UR-MX | N/A | N/A |
RR | N/A | 4.5 ac |
RR-I | 4.5 ac | 10 ac |
R | N/A | 4.5 ac |
TZ | N/A | 4.5 ac |
AG | N/A | 40 ac |
RF | N/A | 20 ac |
STC | N/A | 4.5 ac |
RC *For lots outside UGAs* | N/A | 4.5 ac |
LWWO | 10 ac; 40 ac if underlying district is RF | |